Nath Anjan Jyoti, Islam Saidul, Sahu Samyak
Pasteur Institute of India, Nilgiris Hill, Coonoor, 643 103 Tamil Nadu India.
Department of Parasitology, College of Veterinary Science, Assam Agricultural University, Guwahati, 781022 Assam India.
J Parasit Dis. 2016 Mar;40(1):161-5. doi: 10.1007/s12639-014-0469-8. Epub 2014 May 4.
Cutaneous lesions in human patient due to the bite of rat mite Ornithonyssus bacoti are frequently misdiagnosed as allergies, fungal infection, or bacterial infection. Bite lesions in the personnel working in a Laboratory Animal facility which was infested with O. bacoti is reported here along with its therapeutic management. Diagnosis of the parasites obtained from the clothing of the personnel and later from the infested mice colony was based on preliminary light microscopy and confirmed by scanning electron microscopy. The mean length and breadth of adult female mite were 1.13 mm × 0.63 mm. The body is hairy, unsegmented and has four pairs of legs. The gnathostoma has long pointed chelicerae and pedipalp. The dorsal surface has one dorsal shield, and the ventral surface has three shields- sternal, genital and anal shield. Treatment of dermatitis involved antihistaminic drugs for a period of 3-5 days. The skin lesion, characterized by papular erythema, tends to disappear within a period of 4-5 days of antihistaminic treatment. In untreated cases, the lesions disappeared within 7-10 days. Tropical rat mite O. bacoti Hirst, 1931 was identified to be the cause of infestation in the laboratory mice colony of Pasteur Institute of India, Coonoor, Tamil Nadu, predisposing the animal handlers to be temporary host.
人类患者因鼠螨巴氏禽刺螨叮咬而出现的皮肤病变常被误诊为过敏、真菌感染或细菌感染。本文报告了在一个受到巴氏禽刺螨侵扰的实验动物设施中工作的人员的叮咬损伤及其治疗处理情况。从该人员衣物上以及后来从受侵扰的小鼠群体中获取的寄生虫诊断，基于初步光学显微镜检查，并通过扫描电子显微镜确认。成年雌性螨的平均长度和宽度为1.13毫米×0.63毫米。身体多毛，不分节，有四对腿。口器有长而尖的螯肢和须肢。背面有一个背板，腹面有三个板——胸板、生殖板和肛板。皮炎的治疗使用抗组胺药物3至5天。以丘疹性红斑为特征的皮肤病变，在抗组胺治疗4至5天内往往会消失。在未治疗的病例中，病变在7至10天内消失。已确定热带鼠螨巴氏禽刺螨（Hirst，1931年）是印度泰米尔纳德邦库努尔巴斯德研究所实验小鼠群体侵扰的原因，使动物饲养员成为临时宿主。
